<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello Vue</title>
    <script src="./node_modules/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">{{ content }}</div>
    <script>
        var app = new Vue({
          el:'#app',
          data: {
            content:'hello vue'
          }
        });

        setTimeout(function () {
          app.$data.content = 'hello vue forever'
        },2000)
    </script>
</body>
</html>